40 GARRETT: ON POLYNESIAN MITRIDiE. 



tubercles. When they depart so widely from the type, they 

 can scarcely be distinguished from T. Pacifica, Reeve. The 

 band is occasionally obsolete, and is usually more or less 

 interrupted. 



91. Turricula concinna Reeve, 1. c, pi. xxvi., fig. 203. 



A few more or less perfect dead shells were found on 

 the reefs at Samoa and Viti Islands. 



Our examples, which are somewhat faded, accord very 

 nearly with Reeve's figure and description of a Philippine 

 specimen. The Polynesian shells vary from yellow to orange- 

 yellow with the interspaces between the transverse ridges 

 brownish-red, and the third ridge beneath the angle is white 

 as represented in the above mentioned figure but not alluded 

 to in the text. Some examples have the angle on the upper 

 portion of the whorls nearly obsolete. 



92. Turricula crocata Lamarck. Reeve, 1. c, pi. xxvi., fig. 



206. 



Like the preceding species dead specimens only, oc- 

 curred on the reefs at all the groups south of the equator, 

 except the Marquesas and Panmotu Islands. 



Our examples are light orange-yellow, and like the 

 preceding species which they closely resemble in shape and 

 sculpture, have a similar transverse white band on the third 

 ridge beneath the angle. The ridges are more distinctly 

 granulated than on conciftna, which with the concolored 

 interspaces will at once distinguish it from the latter. 



93. Turricula consanguinea Reeve, 1. c, pi. xxx., fig. 241. 



More abundant than the two preceding species, and 

 occurs at all the groups except the Caroline and Marquesas 

 Islands. Found under dead coral on the outer and inner 

 reefs. 



Our shells which are darker than Reeve's figure, are 

 deep brownish-red, and all have a transverse row of whitish 



